A 0.4126-g sample of primary-standard Na2CO3 was treated with 40.00 mL of dilute perchloric acid. The solution was boiled to remove CO2, following which the excess HClO4 was back - titrated with 9.20 mL of dilute NaOH. In a separate experiment, it was established that 26.93 mL of the HClO4 neutralized the NaOH in a 25.00-mL portion. Calculate the molarities of the HClO4 and NaOH.

Q: A student weighs out 0.9854 g of Na2CO3 unknown and dissolves it in 25.00 mL of deionized water. A…

A: Answer % of Na2CO3 in the unknown = 54.05% Formulas No.of moles                           = Given…

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Q: 1. A solution of HClO4 was standardized by dissolving 0.4008 g of primary-standard-grade HgO in a…

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A:

Q: Titration of 0.2342 g of pure Na,C,0, (134.0 g/mol) required 13.45 ml of KMNO, solution according to…

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Q: Limestone consists mainly of the mineral calcite, CaCO 3. The carbonate content of 0.5413 g of…

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Q: A sample of impure NaOH, which has been partially converted to Na2CO3 by exposure to CO2, is…

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Q: Mass of NaOCl in commercial bleach titrated. ?

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Q: A student wanted to determine the amount of NaOCI in a commercial bleaching solution. He diluted 2 g…

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Q: Moles of OCl– in the diluted bleach titrated. ?

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Q: A 0.4126-g sample of primary-standard Na₂CO₃ was treated with 40.00 mL of dilute perchloric acid.…

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Q: if a 1.25g sample of magnesium oxide (98.9%) were titrated with 70ml of 1.04N of sulfuric acid, what…

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Q: A 1.219-g containing (NH4)2SO4, NH4NO3, and nonreactive substances was diluted to 200 mL in a…

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Q: What volume of 0.80 M HCl will be required to titrate 36.2 grams of NaBrO (fw = 118.9 g/mol) to the…

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Q: calculate the concentration of Ca2+ in a saturated solution of Ca(OH)2 (ksp= 0.0000055) with a pH of…

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Q: experimental procedures were performed and it was observed that the titrant consumption was 8.4 mL.…

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Q: 9. A suspension of milk of magnesia, Mg(OH)2, is analysed by a back-titration. A 1.0391 g sample is…

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Q: A 0.5131-g sample containing KBr is dissolved in 50 mL of distilled water. Titrating with 0.04473 M…

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